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<h4 class="subsection" id="Push_002fPop-Macro-Pragmas-1"><span>6.62.14 Push/Pop Macro Pragmas<a class="copiable-link" href="#Push_002fPop-Macro-Pragmas-1"> &para;</a></span></h4>

<p>For compatibility with Microsoft Windows compilers, GCC supports
&lsquo;<samp class="samp">#pragma push_macro(<var class="var">&quot;macro_name&quot;</var>)</samp>&rsquo;
and &lsquo;<samp class="samp">#pragma pop_macro(<var class="var">&quot;macro_name&quot;</var>)</samp>&rsquo;.
</p>
<dl class="table">
<dt><a id="index-pragma_002c-push_005fmacro"></a><span><code class="code">#pragma push_macro(<var class="var">&quot;macro_name&quot;</var>)</code><a class="copiable-link" href="#index-pragma_002c-push_005fmacro"> &para;</a></span></dt>
<dd><p>This pragma saves the value of the macro named as <var class="var">macro_name</var> to
the top of the stack for this macro.
</p>
</dd>
<dt><a id="index-pragma_002c-pop_005fmacro"></a><span><code class="code">#pragma pop_macro(<var class="var">&quot;macro_name&quot;</var>)</code><a class="copiable-link" href="#index-pragma_002c-pop_005fmacro"> &para;</a></span></dt>
<dd><p>This pragma sets the value of the macro named as <var class="var">macro_name</var> to
the value on top of the stack for this macro. If the stack for
<var class="var">macro_name</var> is empty, the value of the macro remains unchanged.
</p></dd>
</dl>

<p>For example:
</p>
<div class="example smallexample">
<pre class="example-preformatted">#define X  1
#pragma push_macro(&quot;X&quot;)
#undef X
#define X -1
#pragma pop_macro(&quot;X&quot;)
int x [X];
</pre></div>

<p>In this example, the definition of X as 1 is saved by <code class="code">#pragma
push_macro</code> and restored by <code class="code">#pragma pop_macro</code>.
</p>
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